From: Kai Moritz <kai@juplo.de>
Date: Sat, 11 Feb 2023 06:09:45 +0000 (+0100)
Subject: counter: Implemented an integration test for the old message-format
X-Git-Tag: counter-tests-instances~9
X-Git-Url: http://juplo.de/gitweb/?a=commitdiff_plain;h=9b66fb28d8b140694b9bdbd245e89bffb9f00726;p=demos%2Fkafka%2Fwordcount

counter: Implemented an integration test for the old message-format
---

diff --git a/pom.xml b/pom.xml
index 83f96cd..c7b09d7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,6 +29,10 @@
 			<groupId>org.apache.kafka</groupId>
 			<artifactId>kafka-streams</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.kafka</groupId>
+			<artifactId>spring-kafka</artifactId>
+		</dependency>
 
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -46,11 +50,27 @@
 			<artifactId>lombok</artifactId>
 			<optional>true</optional>
 		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.kafka</groupId>
+			<artifactId>spring-kafka-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.awaitility</groupId>
+			<artifactId>awaitility</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.assertj</groupId>
+			<artifactId>assertj-core</artifactId>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 
 	<build>
diff --git a/src/main/java/de/juplo/kafka/wordcount/counter/CounterApplication.java b/src/main/java/de/juplo/kafka/wordcount/counter/CounterApplication.java
index 1ee65ca..6a6a78c 100644
--- a/src/main/java/de/juplo/kafka/wordcount/counter/CounterApplication.java
+++ b/src/main/java/de/juplo/kafka/wordcount/counter/CounterApplication.java
@@ -34,6 +34,9 @@ public class CounterApplication
 		propertyMap.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, properties.getBootstrapServer());
 		propertyMap.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.StringSerde.class.getName());
 		propertyMap.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.StringSerde.class.getName());
+		propertyMap.put(StreamsConfig.STATE_DIR_CONFIG, "target");
+		propertyMap.put(StreamsConfig.COMMIT_INTERVAL_MS_CONFIG, 0);
+		propertyMap.put(StreamsConfig.CACHE_MAX_BYTES_BUFFERING_CONFIG, 0);
 		propertyMap.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
 
 		CounterStreamProcessor streamProcessor = new CounterStreamProcessor(
diff --git a/src/test/java/de/juplo/kafka/wordcount/counter/CounterApplicationIT.java b/src/test/java/de/juplo/kafka/wordcount/counter/CounterApplicationIT.java
new file mode 100644
index 0000000..3e47ebe
--- /dev/null
+++ b/src/test/java/de/juplo/kafka/wordcount/counter/CounterApplicationIT.java
@@ -0,0 +1,149 @@
+package de.juplo.kafka.wordcount.counter;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.Value;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.clients.consumer.ConsumerRecord;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.kafka.annotation.KafkaListener;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+
+import java.time.Duration;
+
+import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.*;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.awaitility.Awaitility.*;
+
+
+@SpringBootTest(
+		properties = {
+				"spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}",
+				"juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
+				"juplo.wordcount.counter.input-topic=" + TOPIC_IN,
+				"juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
+@EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT }, partitions = PARTITIONS)
+@Slf4j
+public class CounterApplicationIT
+{
+	public final static String TOPIC_IN = "in";
+	public final static String TOPIC_OUT = "out";
+	static final int PARTITIONS = 2;
+
+	@Autowired
+	KafkaTemplate<String, String> kafkaTemplate;
+	@Autowired
+	ObjectMapper mapper;
+	@Autowired
+	Consumer consumer;
+
+
+	@BeforeEach
+	public void clear()
+	{
+		consumer.received.clear();
+	}
+
+
+	@Test
+	void testSendMessage() throws Exception
+	{
+		kafkaTemplate.send(TOPIC_IN, "peter", "Hallo");
+		kafkaTemplate.send(TOPIC_IN, "klaus", "Müsch");
+		kafkaTemplate.send(TOPIC_IN, "peter", "Welt");
+		kafkaTemplate.send(TOPIC_IN, "klaus", "Müsch");
+		kafkaTemplate.send(TOPIC_IN, "klaus", "s");
+		kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
+		kafkaTemplate.send(TOPIC_IN, "peter", "Welt");
+		kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
+		kafkaTemplate.send(TOPIC_IN, "klaus", "s");
+		kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
+		kafkaTemplate.send(TOPIC_IN, "klaus", "s");
+
+		Message peter1 = Message.of(
+				Key.of("peter", "Hallo"),
+				"1");
+		Message peter2 = Message.of(
+				Key.of("peter", "Welt"),
+				"1");
+		Message peter3 = Message.of(
+				Key.of("peter", "Boäh"),
+				"1");
+		Message peter4 = Message.of(
+				Key.of("peter", "Welt"),
+				"2");
+		Message peter5 = Message.of(
+				Key.of("peter", "Boäh"),
+				"2");
+		Message peter6 = Message.of(
+				Key.of("peter", "Boäh"),
+				"3");
+
+		Message klaus1 = Message.of(
+				Key.of("klaus", "Müsch"),
+				"1");
+		Message klaus2 = Message.of(
+				Key.of("klaus", "Müsch"),
+				"2");
+		Message klaus3 = Message.of(
+				Key.of("klaus", "s"),
+				"1");
+		Message klaus4 = Message.of(
+				Key.of("klaus", "s"),
+				"2");
+		Message klaus5 = Message.of(
+				Key.of("klaus", "s"),
+				"3");
+
+		await("Expexted converted data")
+				.atMost(Duration.ofSeconds(10))
+				.untilAsserted(() ->
+				{
+					assertThat(consumer.received).hasSize(2);
+					assertThat(consumer.received.get("klaus")).containsExactly(klaus1, klaus2, klaus3, klaus4, klaus5);
+					assertThat(consumer.received.get("peter")).containsExactly(peter1, peter2, peter3, peter4, peter5, peter6);
+				});
+	}
+
+
+	@RequiredArgsConstructor
+	static class Consumer
+	{
+		private final MultiValueMap<String, Message> received = new LinkedMultiValueMap<>();
+		private final ObjectMapper mapper;
+
+		@KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
+		public void receive(ConsumerRecord<String, String> record) throws JsonProcessingException
+		{
+			log.debug("Received message: {}", record);
+			Key key = mapper.readValue(record.key(), Key.class);
+			received.add(key.getUsername(), Message.of(key,record.value()));
+		}
+	}
+
+	@Value(staticConstructor = "of")
+	static class Message
+	{
+		Key key;
+		String value;
+	}
+
+	@TestConfiguration
+	static class Configuration
+	{
+		@Bean
+		Consumer consumer(ObjectMapper mapper)
+		{
+			return new Consumer(mapper);
+		}
+	}
+}
diff --git a/src/test/resources/logback-test.xml b/src/test/resources/logback-test.xml
new file mode 100644
index 0000000..171bf63
--- /dev/null
+++ b/src/test/resources/logback-test.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <include resource="org/springframework/boot/logging/logback/base.xml" />
+    <logger name="de.juplo.kafka.wordcount.counter" level="DEBUG" />
+</configuration>